CN107389141B - Wireless running water meter - Google Patents
Wireless running water meter Download PDFInfo
- Publication number
- CN107389141B CN107389141B CN201710732500.8A CN201710732500A CN107389141B CN 107389141 B CN107389141 B CN 107389141B CN 201710732500 A CN201710732500 A CN 201710732500A CN 107389141 B CN107389141 B CN 107389141B
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- CN
- China
- Prior art keywords
- magnetic
- transducer
- upper cavity
- transducers
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000008399 tap water Substances 0.000 claims abstract description 12
- 235000020679 tap water Nutrition 0.000 claims abstract description 12
- 210000004907 gland Anatomy 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
- G01F15/063—Indicating or recording devices for remote indication using electrical means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Details Of Flowmeters (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a wireless running water meter, belonging to the technical field of water meters. The baffle plate with the sleeve divides the watchcase into an upper cavity and a lower cavity, and the baffle plate and a limit plate at the end part of the sleeve are provided with limit rings; an inlet and an outlet are arranged on the side wall of the lower cavity, an end cover with a stepped shaft is arranged at the end part of the side wall of the lower cavity, an impeller is arranged on the stepped shaft, an impeller wheel is sleeved in a sleeve, a half shaft is arranged on the wheel shaft, magnetic rings are sleeved on the wheel shaft and the half shaft, the magnetic rings are of a constant-thickness structure, and the end face of the magnetic rings is a cam curved surface; the upper cavity wall is provided with a gland, the gland sequentially presses the display screen, the spacer ring and the circuit board on the boss I of the upper cavity wall, the display screen is embedded with a photovoltaic cell, and the circuit board is provided with an energy conversion storage and information emission unit; two groups of transducers separated by a gasket are arranged on the boss II of the upper cavity wall, the free end of each transducer is provided with a magnetic block, and the magnetic blocks are attracted with the magnetic ring; the transducer is formed by bonding a substrate and PZT films, and the PZT films of the two groups of transducers are oppositely arranged; the number of voltage signals generated by the transducer is used to characterize the tap water usage.
Description
Technical Field
The invention belongs to the field of water meters and water supply equipment, and particularly relates to a wireless running water meter.
Background
Tap water is an indispensable consumer product for the daily life of residents, and the recording and statistics of consumption are mainly finished by manpower at present. The manual meter reading is low in efficiency and wastes manpower and material resources, and more importantly, a meter reader often cannot go back and forth for many times in a free-work manner in the households, so that the accuracy and the instantaneity of data statistics are seriously affected, and people start to develop a tap water and gas remote automatic meter reading system. Although the existing meter reading system data processing and transmission technology is mature, no practical popularization and application report exists at present, one of the reasons is that the power supply problem cannot be well solved, the new and old houses are not pre-laid with cables for the automatic meter reading system, if temporary open wires are laid, potential safety hazards exist, and the batteries are used for power supply and are required to be replaced frequently, and the two methods are difficult to be accepted by users, so that development of a running water meter capable of realizing self-supply of electric energy is imperative.
Disclosure of Invention
The invention provides a wireless running water meter, which adopts the following implementation scheme: the baffle plate with the sleeve divides the watchcase into an upper cavity and a lower cavity, the end part of the sleeve is provided with a limiting plate through a screw, the limiting plate and the baffle plate are provided with a limiting ring, the limiting ring is made of magnet or rubber, the sleeve, the upper cavity and the lower cavity are coaxial, the side wall of the lower cavity is provided with an inlet and an outlet, and the inlet and the outlet are coaxial; an end cover is arranged at the end part of the side wall of the lower cavity through a screw, and a sealing gasket is arranged between the end cover and the side wall of the lower cavity; the center of the end cover is provided with a stepped shaft, an impeller is arranged on the stepped shaft through a bearing, a wheel shaft and blades are arranged on the rim of the impeller, the wheel shaft is sleeved in a sleeve, a half shaft is arranged on the wheel shaft through a screw, magnetic rings are sleeved on the wheel shaft and the half shaft, the magnetic rings are of an equal-thickness structure, and the end faces of the magnetic rings are cam curved surfaces; the upper cavity wall is provided with a gland through threads, the gland is of an annular structure, the gland sequentially presses the display screen, the spacer ring and the circuit board on a boss I of the upper cavity wall, and a photovoltaic cell is embedded on the display screen; two groups of transducers are arranged on the boss II of the upper cavity wall through screws and compression rings, the two groups of transducers are separated by a gasket, the free end of each transducer is provided with a magnetic block through the screws, and acting force between the magnetic block and the magnetic ring is attractive force; the transducer is formed by bonding a substrate and PZT films, and the PZT films of the two groups of transducers are oppositely arranged; the energy converter is connected with the circuit board through the lead group, the circuit board is provided with an energy conversion unit, a storage unit and a transmitting unit, and the storage element is a super capacitor; the circuit board is connected with the display screen and the photovoltaic cell through different wire groups.
In the invention, the transducer is in a straight structure before installation and in a bending structure after installation; the transducers in the two groups of transducers are not bent and deformed when the magnetic blocks are contacted with each other, the maximum stress on the PZT film is smaller than the allowable value of the PZT film when the magnetic blocks are contacted with the limiting ring, the deformation of the free end of the transducer is smaller than the allowable value Z of the PZT film, and the PZT film has the advantages thatWherein: b=1- α+αβ, a=α 4 (1-β) 2 -4α 3 (1-β)+6α 2 (1-β)-4α(1-β)+1，α＝h m /H，β＝E m /E p ，/>h m And H is the substrate thickness and the total transducer thickness, E m And E is p Young's modulus, k of substrate and PZT film, respectively 31 And->The electromechanical coupling coefficient and allowable stress of PZT material are respectively, and L is the transducer length.
In the invention, the photovoltaic cell converts light energy into electric energy and stores the electric energy in the super capacitor on the circuit board, so as to provide energy for a low-power data display system; when tap water flows through the water meter, the tap water flows into the lower cavity through the inlet and then flows out through the outlet, and the water flow drives the blades to drive the wheel shaft and the magnetic ring to rotate, so that the position relationship and the interaction force between the magnetic ring and the magnetic block are changed; when the impeller continuously rotates, the magnetic block moves along the outline of the magnetic ring due to the attractive force of the magnetic ring and forces the transducer to reciprocate up and down to bend and deform; the stress of the PZT film is alternately changed when the transducer is bent up and down in a reciprocating way, so that mechanical energy is converted into electric energy, and the generated electric energy is stored in a super capacitor on a circuit board after conversion treatment and is used for transmitting high-power information; meanwhile, the number of pulse voltage signals generated during bending deformation of the transducer is used for representing the rotating speed of the impeller and the consumption of tap water; when the tap water consumption reaches a certain set value, the emission system emits water consumption data outwards, or the emission system emits water consumption data outwards on a fixed date of each month.
The invention has the characteristics that: (1) the energy is self-sufficient, and the installation and the use are convenient; (2) the transducer is pre-bent after being assembled, and the PZT film is only stressed under compression in working, so that the process is simple, the cost is low, and the reliability is high; (3) the impeller and the electric control unit are respectively provided with a cavity and are excited in a non-contact way, so that sealing, impact and noise are not needed.
Drawings
FIG. 1 is a schematic view of the water meter in a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a shell in a preferred embodiment of the present invention;
FIG. 3 is a view A-A of FIG. 1;
FIG. 4 is a schematic view of an assembled impeller, magnetic ring and press block according to a preferred embodiment of the present invention;
fig. 5 is a top view of fig. 4.
Detailed Description
The baffle plate a1 with the sleeve a4 divides the watchcase a into a lower cavity C1 and an upper cavity C2, a limit plate d is arranged at the end part of the sleeve a4 through screws, a limit ring b is arranged on the limit plate d and the baffle plate a1, the limit ring b is made of magnet or rubber, the sleeve a4, the lower cavity C1 and the upper cavity C2 are coaxial, an inlet a2 and an outlet a3 are arranged on the side wall of the lower cavity C1, and the centers of the inlet a2 and the outlet a3 are coaxial; an end cover C is arranged at the end part of the side wall of the lower cavity C1 through a screw, and a sealing gasket is arranged between the end cover C and the side wall of the lower cavity C1; the center of the end cover c is provided with a stepped shaft c1, an impeller f is arranged on the stepped shaft c1 through a bearing e, a wheel shaft f2 and a blade f3 are arranged on a wheel rim f1 of the impeller f, the wheel shaft f2 is sleeved in a sleeve a4, a half shaft g is arranged on the wheel shaft f2 through a screw, magnetic rings h are sleeved on the wheel shaft f2 and the half shaft g, the magnetic rings h are of an equal-thickness structure, and the end faces of the magnetic rings h are cam curved surfaces; a gland i is arranged on the upper cavity wall a5 through threads, the gland i is of an annular structure, the display screen j, the spacer ring k and the circuit board m are sequentially pressed on a boss a6 of the upper cavity wall a5 by the gland i, and a photovoltaic cell n is embedded on the display screen j; two groups of transducers p (marked with errors in fig. 1) are arranged on a boss II a7 of the upper cavity wall a5 through screws and a compression ring o, the two groups of transducers p are separated by a gasket y, a magnetic block q is arranged at the free end of the transducer p through the screws, and acting force between the magnetic block q and a magnetic ring h is attractive force; the transducer p is formed by bonding a substrate p1 and PZT films p2, and the PZT films p2 of the two groups of transducers p are oppositely arranged; the transducer p is connected with a circuit board m through a wire set, an energy conversion unit, a storage unit and a transmitting unit are arranged on the circuit board m, and the storage element is a super capacitor; the circuit board m is connected with the display screen j and the photovoltaic cell n through different wire groups.
In the invention, the transducer p is in a straight structure before installation and in a bending structure after installation; the transducers in the two groups of transducers p are not bent and deformed when the magnetic blocks q are contacted with each other, the maximum stress on the PZT film is smaller than the allowable value of the PZT film when the magnetic blocks q are contacted with the limiting ring b, the deformation of the free end of the transducer p is smaller than the allowable value Z of the PZT film, and the transducer has the following characteristics thatWherein: b=1- α+αβ, a=α 4 (1-β) 2 -4α 3 (1-β)+6α 2 (1-β)-4α(1-β)+1，α＝h m /H，β＝E m /E p ，/>h m And H is the thickness of the substrate p1 and the total thickness of the transducer p, E m And E is p Young's modulus, k of the substrate p1 and PZT film p2, respectively 31 And->The electromechanical coupling coefficient and allowable stress of the PZT material, respectively, L is the length of the transducer p.
In the invention, the photovoltaic cell n converts light energy into electric energy and stores the electric energy in the super capacitor on the circuit board m to provide energy for a low-power data display system; when tap water flows through the water meter, the tap water flows into the lower cavity C1 through the inlet a2 and then flows out through the outlet a3, and the water flow driving blade f3 drives the wheel shaft f2 and the magnetic ring h to rotate, so that the position relation and interaction force between the magnetic ring h and the magnetic block q are changed; when the impeller f continuously rotates, the magnetic block q moves along the outline of the magnetic ring h due to the attractive force of the magnetic ring h and forces the transducer p to reciprocate up and down to bend and deform; the stress of the PZT film p2 is alternately changed when the transducer p is bent up and down in a reciprocating way, so that mechanical energy is converted into electric energy, and the generated electric energy is stored in a super capacitor on the circuit board m after being converted for high-power information transmission; meanwhile, the number of pulse voltage signals generated when the transducer p is bent and deformed is used for representing the rotating speed of the impeller f and the consumption of tap water; when the tap water consumption reaches a certain set value, the emission system emits water consumption data outwards, or the emission system emits water consumption data outwards on a fixed date of each month.
Claims (1)
1. A wireless running water meter, characterized in that: the baffle plate with the sleeve divides the watchcase into an upper cavity and a lower cavity, the end part of the sleeve is provided with a limiting plate, the limiting plate and the baffle plate are provided with a limiting ring, the limiting ring is made of magnet or rubber, the sleeve, the upper cavity and the lower cavity are coaxial, the side wall of the lower cavity is provided with an inlet and an outlet, and the inlet and the outlet are coaxial; an end cover is arranged at the end part of the side wall of the lower cavity, and a sealing gasket is arranged between the end cover and the side wall of the lower cavity; the center of the end cover is provided with a stepped shaft, an impeller is arranged on the stepped shaft through a bearing, a wheel shaft and blades are arranged on the rim of the impeller, the wheel shaft is sleeved in a sleeve, a half shaft is arranged on the wheel shaft, magnetic rings are sleeved on the wheel shaft and the half shaft, the magnetic rings are of an equal-thickness structure, and the end face of the magnetic rings is a cam curved surface; the upper cavity wall is provided with a gland which is of an annular structure, the gland sequentially presses the display screen, the spacer ring and the circuit board on the boss I of the upper cavity wall, and the display screen is embedded with a photovoltaic cell; the circuit board is provided with an energy conversion unit, a storage unit and a transmitting unit, and the storage element is a super capacitor; two groups of transducers are arranged on the boss II of the upper cavity wall and are separated by a gasket, the free end of each transducer is provided with a magnetic block, and the acting force between the magnetic block and the magnetic ring is attractive force; the transducer is formed by bonding a substrate and PZT films, and the PZT films of the two groups of transducers are oppositely arranged; the transducer is connected with the circuit board through the wire group, and the circuit board is connected with the display screen and the photovoltaic cell through different wire groups; the transducer is in a straight structure before installation and in a bent structure after installation; the transducers in the two groups of transducers are not bent and deformed when the magnetic blocks are contacted, and the deformation of the free ends of the transducers is smaller than the allowable value when the magnetic blocks are contacted with the limiting ring; the number of pulse voltage signals generated by the transducer is used for representing the rotating speed of the impeller and the tap water consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732500.8A CN107389141B (en) | 2017-08-17 | 2017-08-17 | Wireless running water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710732500.8A CN107389141B (en) | 2017-08-17 | 2017-08-17 | Wireless running water meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107389141A CN107389141A (en) | 2017-11-24 |
| CN107389141B true CN107389141B (en) | 2023-07-21 |
Family
ID=60345527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710732500.8A Active CN107389141B (en) | 2017-08-17 | 2017-08-17 | Wireless running water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107389141B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202918U (en) * | 1985-07-08 | 1986-07-09 | 湖南大学 | Sensor for measuring the flow of conductive liquid |
| US5069067A (en) * | 1988-06-10 | 1991-12-03 | Select Corporation | Fluid flow meter |
| DE4211273A1 (en) * | 1992-04-03 | 1993-10-07 | Siemens Ag | Flow measurement device with mechanically resonant structure - contains flexible element whose torsion is measured via magnetostrictive film permeability changes |
| CN104485849A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Channel flow generator applied to remote meter reading system |
| CN205642479U (en) * | 2016-04-07 | 2016-10-12 | 福建国仪上润投资有限公司 | Magnetic induction pulse water gauge |
| CN106197581A (en) * | 2016-06-15 | 2016-12-07 | 浙江师范大学 | A kind of self-powered pipe flow speed monitor |
| CN106932031A (en) * | 2017-03-29 | 2017-07-07 | 苏州亚思科精密数控有限公司 | A kind of accurate measurement fluid flowmeter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57175913A (en) * | 1981-04-23 | 1982-10-29 | Hanshin Keiki Seisakusho:Kk | Tap-water meter |
| US9310236B2 (en) * | 2014-09-17 | 2016-04-12 | Joseph Baumoel | Ultrasonic flow meter using reflected beams |
-
2017
- 2017-08-17 CN CN201710732500.8A patent/CN107389141B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202918U (en) * | 1985-07-08 | 1986-07-09 | 湖南大学 | Sensor for measuring the flow of conductive liquid |
| US5069067A (en) * | 1988-06-10 | 1991-12-03 | Select Corporation | Fluid flow meter |
| DE4211273A1 (en) * | 1992-04-03 | 1993-10-07 | Siemens Ag | Flow measurement device with mechanically resonant structure - contains flexible element whose torsion is measured via magnetostrictive film permeability changes |
| CN104485849A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Channel flow generator applied to remote meter reading system |
| CN205642479U (en) * | 2016-04-07 | 2016-10-12 | 福建国仪上润投资有限公司 | Magnetic induction pulse water gauge |
| CN106197581A (en) * | 2016-06-15 | 2016-12-07 | 浙江师范大学 | A kind of self-powered pipe flow speed monitor |
| CN106932031A (en) * | 2017-03-29 | 2017-07-07 | 苏州亚思科精密数控有限公司 | A kind of accurate measurement fluid flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107389141A (en) | 2017-11-24 |
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Effective date of registration: 20231018 Address after: 266000 Room 601, building 3, Qingdao Software Park, No. 288, Ningxia road, Shinan District, Qingdao, Shandong Patentee after: QINGDAO IESLAB ELECTRONIC Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
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| TR01 | Transfer of patent right |